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Re: [Qemu-devel] SoftFloat licensing in Linux kernel
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From: |
Peter Maydell |
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Subject: |
Re: [Qemu-devel] SoftFloat licensing in Linux kernel |
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Date: |
Mon, 29 Apr 2013 11:53:06 +0100 |
On 29 April 2013 11:37, Peter Maydell <address@hidden> wrote:
> On 11 April 2013 07:49, Stefan Hajnoczi <address@hidden> wrote:
>> QEMU uses the John Hauser's SoftFloat library. It seems the matter
>> isn't settled yet in Linux but the FSF says the license is
>> incompatible with GPLv2.
>
> So the resolution determined for the kernel is that they actually
> took the softfloat code at a version before the indemnification
> clause appeared in upstream-softfloat's license:
> http://lists.infradead.org/pipermail/linux-arm-kernel/2013-April/163904.html
>
> Given that that change only happened ~2010 it seems pretty
> likely that QEMU's softfloat code also predates it; has
> anybody done the necessary digging in our version control
> history to confirm?
...rats, looks like (a) the license change was earlier, at
the upstream version 2->2b boundary and (b) QEMU's softfloat
is based on 2b, not 2 (as the kernel's is.)
-- PMM